Home › Electronic Devices & Circuits › If an amplifier has open-loop gain A = 1000 and negative-feedback factor beta_f = 0.09, its closed-loop gain A/(1 + A beta_f) is approximately?

MCQ Practice Question

Electronic Devices & Circuits Feedback Amplifiers

If an amplifier has open-loop gain A = 1000 and negative-feedback factor beta_f = 0.09, its closed-loop gain A/(1 + A beta_f) is approximately?

A1.1
B11
C90
D1000

Show AnswerHide AnswerReport an error

Correct Answer: B. 11

Explanation: A_f = 1000/(1 + 1000×0.09) = 1000/91 ≈ 10.99, approximately 11.

Reference: Standard analog electronics: negative-feedback gain

Continue practicing: Electronic Devices & Circuits MCQs or browse all MCQs.